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Hardness
Also:
Resistance to penetration.
Commonly recorded in the field using the Hand Test:
Fist hard: A gloved fist can penetrate at least 5cm with a 5-10 N force.
Four-finger hard: Four gloved fingers can penetrate at least 5cm with a 5-10 N force.
One-finger hard: One finger can penetrate at least 5cm with a 5-10 N force.
Pencil hard: A hand held pencil can penetrate at least 5cm with a 5-10 N force.
Knife hard: A hand held knife can penetrate at least Scm with a 5-10 cm N force.
This glossary is a work in progress and is made possible by AlpenPro.
